有人说：“鸟的全身都为飞行而设计”，与这句话无关的选项是（ ）
— I wonder ___ Mary has kept her figure after all these years.
— By working out every day.
如图，把矩形ABCD沿EF翻折，点B恰好落在AD边的B′处，若AE=2，DE=6，∠EFB=60°，则矩形ABCD的面积是（ ）
